A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 2925-00-149-0760
NSN 5930-00-857-1535
NSN 5930-01-111-8791
NSN 5985-01-436-7527
NSN 5965-01-274-7933
NSN 6110-01-432-0003
NSN 5915-01-426-8862
NSN 5835-00-764-4388
NSN 5985-01-004-6453
NSN 5960-01-442-7950
NSN 5920-01-019-3685
NSN 6610-00-149-1534